Why post-purchase upselling changes the math
Most merchants pour everything into getting people to checkout. That’s where the focus goes. But the moment right after someone buys is often better than anything that came before it.
That customer just handed over their card. The decision is made. No comparison tabs open, no second-guessing. A relevant offer there tends to land well - it reads more like a helpful suggestion than a sales tactic.
The math is simple enough. If 10% of your customers accept a $25 post-purchase upsell and you’re doing 500 orders a month, that’s $1,250 extra per month without running a single new ad.
We tested 15+ upsell apps on Shopify to find the 9 worth using. Every app on this list is Built for Shopify certified and has been evaluated on placement options, setup experience, analytics, and pricing.
How we chose these apps: Each app was tested on live stores and evaluated on upsell placements, conversion features, pricing, performance impact, and merchant reviews. We focused on apps that increase AOV without making the shopping experience worse.
Best Overall Post-Purchase Upsell
1. ReConvert (Upsell.com) - Best overall upsell app
ReConvert is the most popular dedicated upsell app on Shopify, and we’ve tested it in enough depth to write a full review. It earns its reputation. The app covers every upsell placement - post-purchase one-click offers, a customizable thank-you page builder, cart add-ons, product page cross-sells, and checkout upsells for Shopify Plus.
Why we recommend it: The one-click post-purchase upsell is the core feature. Customers see the offer after they’ve paid, so there’s no friction and no risk of losing the original sale. One tap adds the item without re-entering payment details. We saw 8-15% acceptance on well-matched product suggestions during testing. The AI picks relevant products automatically and A/B testing lets you improve over time.
What to watch out for: Each tier has both an order cap and a revenue cap - you move up when you hit either one. Growing stores tend to blow through tiers faster than they expect. Checkout upsells only work on Shopify Plus.
We’ve tested it in depth - read our full ReConvert review for a complete breakdown.
| Rating | 4.8/5 (2,834 reviews) Built for Shopify |
| Pricing | Free (dev stores), Basic $4.99/mo, Growth $9.99/mo, Business $19.99/mo |
| Best For | Stores that want a complete post-purchase upsell system with AI recommendations and A/B testing |
| Key Features | One-click post-purchase upsells, thank-you page builder, cart upsells, checkout upsells (Plus), AI recommendations, A/B testing |
Best for Shopify Plus
2. Zipify OneClickUpsell - Best for Shopify Plus merchants
Zipify OneClickUpsell (OCU) was built by Ezra Firestone, a well-known name in Shopify ecommerce, and it’s designed for high-volume stores that need serious funnel capabilities. It handles pre-purchase upsells, post-purchase offers, and thank-you page widgets with a funnel builder that gives you control over the entire sequence.
Why we recommend it: Before customers reach checkout, you can show a targeted offer based on what’s in their cart - an upgrade, a related product, a bundle. Then another offer after purchase. That two-stage coverage is what separates Zipify from most of the competition. The split testing tools are solid and the analytics cover every step of the funnel.
What to watch out for: $35/mo to start is higher than most alternatives. The app is built for Plus-level store complexity - if you’re under $20K/mo, the price will be hard to justify. The pre-checkout upsell feature also works best with Shopify Plus checkout extensibility.
| Rating | 4.7/5 (453 reviews) Built for Shopify |
| Pricing | Starter $35/mo, Scale $95/mo, Enterprise $195/mo (14-day free trial) |
| Best For | Shopify Plus stores that want a full pre- and post-purchase upsell funnel with split testing |
| Key Features | Pre-purchase upsells, post-purchase one-click offers, thank-you page builder, funnel builder, split testing, detailed analytics |
Best for Simple Post-Purchase Funnels
3. AfterSell Post Purchase Upsell - Best for straightforward funnels
AfterSell focuses on post-purchase upsell funnels. After a customer completes their order, they see a sequence of targeted offers before landing on the thank-you page. Each offer can be accepted or declined with one click, no payment re-entry required. The setup is fast and the pricing is one of the more competitive in the category.
Why we recommend it: Most competitors only give free plans to development stores. AfterSell’s free plan works on live stores - up to 50 orders a month, all core features included. The funnel can show multiple offers in sequence. A customer who skips the first one might still take a cheaper alternative. We saw 6-12% acceptance during testing, depending on how relevant the offer was.
What to watch out for: The free plan caps at 50 orders a month. Past that, you’re looking at $7.99/mo for 200 orders or $19.99/mo for 500. The thank-you page builder is functional but not as customizable as ReConvert’s. If you care a lot about what the post-purchase page looks like, ReConvert gives you more control.
| Rating | 4.8/5 (773 reviews) Built for Shopify |
| Pricing | Free (up to 50 orders/mo), $7.99/mo (200 orders), $19.99/mo (500 orders), $39.99/mo (1,000 orders) |
| Best For | Stores that want an affordable post-purchase upsell funnel with a real free tier |
| Key Features | Post-purchase one-click upsells, multi-offer funnels, thank-you page builder, A/B testing, analytics |
Best for In-Cart Upsells
4. Monster Upsells - Best for in-cart upsells
Monster Upsells focuses on the cart - turning the cart drawer and cart page into active selling surfaces. When a customer adds a product, they see targeted suggestions for add-ons and upgrades directly inside the cart, before they reach checkout. The free shipping bar, add-on widgets, and cart upsells all work from the same place.
Why we recommend it: Most stores don’t do anything useful with their cart. A customer who’s added something is already in buying mode - a relevant suggestion there is a lot less intrusive than a popup. Monster Upsells handles the cart well. The drag-and-drop customizer requires no code and the widgets load fast. We saw 8-14% uptake on add-on offers that were actually relevant to what was in the cart.
What to watch out for: Monster Upsells focuses on the cart, not on what happens after checkout. Post-purchase revenue means a separate app. It also works better when your products have natural pairings - if your catalog is all over the place, suggestion conversion will be low.
| Rating | 4.5/5 (500 reviews) Built for Shopify |
| Pricing | Free (up to 50 orders/mo), Basic $4.99/mo, Pro $9.99/mo, Premium $24.99/mo |
| Best For | Stores that want to maximize cart value with targeted in-cart add-on suggestions |
| Key Features | Cart drawer upsells, free shipping bar, add-on widgets, cart page customizer, bundle add-ons, analytics |
Best for Product Page Upsells
5. Candy Rack - Best for product page one-click upsells
Candy Rack by Digismoothie specializes in product page upsells - one-click add-on offers that appear on the product detail page before the customer reaches the cart. The UI is clean and the offers fit naturally into the page. It works well for accessories, warranties, gift wrapping, and complementary products.
Why we recommend it: The widget is clean. Offers show up as an in-page section or popup that fits the product page without looking like an ad. You can set pairings manually or let the AI handle it. The app loads asynchronously so it doesn’t slow down the page. For stores with obvious add-on products, the product page placement tends to convert well.
What to watch out for: No free plan for live stores. It starts at $19.99/mo with flat pricing - predictable, but higher upfront than order-based alternatives. If your products don’t have natural add-ons, conversion will be low no matter how the widget looks.
| Rating | 4.8/5 (187 reviews) Built for Shopify |
| Pricing | Free (dev stores), Lite $19.99/mo, Standard $49.99/mo, Advanced $99.99/mo |
| Best For | Stores selling products with clear add-ons, accessories, or warranty opportunities |
| Key Features | Product page one-click upsells, AI product pairing, in-page and popup widget styles, cart upsells, analytics |
Best for Multi-Page Upsell Funnels
6. Honeycomb Upsell Funnels - Best for multi-page upsell funnels
Honeycomb builds multi-step upsell sequences - not just a single offer after checkout, but a primary upsell, a second offer if the first is declined, and a downsell as a final option. The funnel builder gives you control over each step and the transitions between them.
Why we recommend it: Most upsell apps show one offer. Honeycomb builds a sequence. Someone who passes on a $50 upgrade might still take a $12 add-on. You can target each step by product purchased, order value, customer tag, or location. The analytics show where people drop out at each stage, which makes figuring out what to fix a lot easier.
What to watch out for: $49.99/mo is steep. The setup takes more time than simpler tools. For stores with small catalogs or low order volume, this level of complexity isn’t worth it. You need real data volume for the multi-step funnel to pay off.
| Rating | 4.8/5 (154 reviews) Built for Shopify |
| Pricing | Silver $49.99/mo, Gold $99.99/mo, Platinum $149.99/mo (14-day free trial) |
| Best For | Stores that want a full multi-step upsell and downsell funnel with detailed targeting |
| Key Features | Multi-page upsell funnels, upsell and downsell sequences, advanced targeting rules, funnel analytics, A/B testing |
Best for Frequently Bought Together
7. Selleasy - Best for frequently bought together
Selleasy puts “Frequently Bought Together” suggestions on the product page, in the cart drawer, and after purchase. Rather than building post-purchase funnels, it focuses on showing related products at the right moments throughout the shopping session. The Amazon-style widget is familiar to shoppers and converts well when product pairings are relevant.
Why we recommend it: A customer who ignores the product page widget might still add something from the cart before checking out. We saw 12-15% uptake on well-paired products during testing. The free plan covers 50 orders a month, and post-purchase upsells come with all paid plans. One of the better-priced options in the category for what it covers.
What to watch out for: Selleasy is better at cross-selling related products than at upselling upgrades or running discount-based funnels. If you need multi-step post-purchase funnels or volume discount upsells, a dedicated app fits better. It works well alongside a post-purchase tool - not as a replacement for one.
| Rating | 4.9/5 (2,163 reviews) Built for Shopify |
| Pricing | Free (up to 50 orders/mo), $9/mo, $19/mo, $29/mo (based on order volume) |
| Best For | Stores focused on cross-selling related products at multiple touchpoints before and after purchase |
| Key Features | Frequently bought together, product add-ons, cart upsells, post-purchase upsells, multi-currency, analytics |
Best Free Upsell App
8. Frequently Bought Together - Best free upsell app
Frequently Bought Together by Code Black Belt has been on the Shopify App Store since 2016 and has more reviews than almost any other upsell app in the category. It does one thing - Amazon-style product recommendations on the product page - and it does it reliably. The AI learns from your store’s actual purchase history to surface products customers genuinely buy together.
Why we recommend it: The free plan has no order caps and no revenue limits. Install it, let the AI spend a day or two on your order history, and recommendations appear automatically on product pages. No manual pairing needed. The $9.99/mo plan adds widget styles and priority support, but most stores can stay on free as long as they want.
What to watch out for: This is a product page cross-sell tool only. No cart upsells, no post-purchase offers, no thank-you page. For post-checkout revenue you’ll need a second app. The widget design is plainer than newer tools like Selleasy, though it’s clean and works fine.
| Rating | 4.9/5 (1,073 reviews) Built for Shopify |
| Pricing | Free (unlimited), Unlimited Plan $9.99/mo |
| Best For | Budget-conscious stores that want AI-powered product recommendations without any monthly cost |
| Key Features | AI frequently bought together, bundle discounts, unlimited free recommendations, customizable widget styles |
Best for Budget Stores
9. UFE Cross Sell & Upsell Bundle - Best for budget stores
UFE (Upsell Funnel Engine) covers a lot of ground for free - post-purchase funnels, product page upsells, cart offers, and bundle discounts, all on a plan with no order caps. For new stores that want to try upselling without paying for it first, UFE is the most placement-complete free option in the category.
Why we recommend it: The free plan covers post-purchase upsells, cross-sell widgets, and cart upsells with unlimited orders. That’s more coverage than any other free upsell app I’ve tested. The setup is quick. For stores under $5K/mo, it’s a reasonable way to see whether upselling moves the needle before spending anything.
What to watch out for: The free plan puts UFE branding on your widgets. The $9.99/mo plan removes that and adds A/B testing. The widget designs look dated on modern Shopify themes - they work, but they don’t feel native. If how things look matters for your brand, upgrade or go with something more polished from the start.
| Rating | 4.8/5 (1,089 reviews) Built for Shopify |
| Pricing | Free (unlimited orders, with UFE branding), $9.99/mo (branding removed, A/B testing, advanced analytics) |
| Best For | New and budget-conscious stores that want multi-placement upsells without a monthly subscription |
| Key Features | Post-purchase upsells, product page cross-sells, cart upsells, bundle discounts, A/B testing (paid), analytics |
How to choose
Under $10K/mo: Start with Frequently Bought Together (free, unlimited) for product page cross-sells and AfterSell (free up to 50 orders) for post-purchase offers. Get some data on what converts before spending anything.
$10K-$50K/mo: Switch to ReConvert for post-purchase and thank-you page upsells. Add Selleasy for product page and cart cross-sells. The two apps cover different parts of the funnel without stepping on each other. Once you have volume, the A/B testing in both will tell you what’s actually working.
$50K+/mo: If you’re on Shopify Plus, Zipify OCU is worth a serious look - the pre-checkout upsell placement is hard to replicate elsewhere. Honeycomb makes sense if you want multi-step sequences with a downsell option. Measure actual AOV lift before moving to higher-tier plans on either.
Already running a bundle app: If you’re using Kaching or Pumper on product pages, focus your upsell app on what happens after checkout. ReConvert and AfterSell both handle that well without conflicting with bundle widgets. For more on bundles, see our best bundle apps for Shopify roundup.
Final thoughts
Most of the attention in Shopify circles goes to ads, product pages, and conversion rates. The thank-you page is usually an afterthought - a dead end with an order number on it. But that customer already bought. They’ve handed over their payment details and they’re not going anywhere.
Start somewhere free. AfterSell and Frequently Bought Together both have real free plans for live stores. Get one upsell running this week. Check acceptance rates after 100 orders, then decide whether to go deeper.
Stores that grow AOV aren’t running fancier apps. Most of them are just running upsell offers at all.
For a full look at every Shopify app category, see our Best Shopify Apps for 2026 guide.
Frequently Asked Questions
What is the difference between upsell and cross-sell?
Upselling means encouraging a customer to buy a more expensive or upgraded version of what they're already purchasing - for example, suggesting a premium bundle or larger size. Cross-selling means recommending complementary products alongside the original purchase, like suggesting a phone case when someone buys a phone. Most Shopify upsell apps handle both. The distinction matters when setting up your offers: upsells work best when there's a clear upgrade path, while cross-sells work best when you have genuinely related products to pair together.
When should upsell offers appear?
Post-purchase is the highest-converting placement because the customer has already committed to buying and there's zero risk of cart abandonment. Product page upsells reach customers while they're still in shopping mode and convert well for related accessories. Cart upsells catch customers right before checkout when they're already thinking about their order total. Checkout upsells (Shopify Plus only) are powerful but require careful design to avoid feeling pushy. Most stores see the best overall results from combining post-purchase one-click upsells with a cross-sell widget on the product page.
Do upsell apps slow down my Shopify store?
The apps on this list are all Built for Shopify certified, which means they meet Shopify's performance standards. Post-purchase apps load after the transaction is complete, so they have zero impact on your store's page speed or conversion rate. Product page and cart apps do add some JavaScript, but certified apps are optimized to minimize this. We tested load times with each app installed and found typical impacts of under 100-150ms. Avoid running two upsell apps at the same placement - they may conflict and double the performance cost.
Can I use an upsell app alongside a bundle app?
Yes, and this is actually a recommended pairing. A dedicated bundle app like Kaching or Pumper handles pre-purchase product page bundles and quantity breaks, while an upsell app like ReConvert focuses on post-purchase offers after the transaction. These two tools complement each other without overlap. Problems arise when two apps both try to display widgets in the same location - like two 'frequently bought together' sections on the same product page. Pick one app per touchpoint and the combination works well.
